Improvement in gas-lamps



PA'rnN'r QFFIGE,

JOSHUA GRAY, OF NEW YORK, N. Y.

IMPROVEMENT IN GAS-LAMPS.

Specification forming part of Letters Patent No. 120,058, dated October17, 1871.

To all whom t may concern:

Be it known that I, J osHUA GRAY, of the city of New York, in the countyof New York and State of New York, have invented a new and ImprovedGas-Lamp; and I do hereby declare that the following is a full and exactdescription thereof,'reference being had to the accompanying drawingforming a part of this specication and to the letters of referencemarked thereon.

My invention relates to certain improvements in gas-lamps for generatingand burning` the vapors or gases of any of the hydrocarbons; and itsobject is to construct a lamp in such a manner that it shall be simpleand cheap in its construction, easily managed, and not liable to get outof order 5 and at the same time shall be efiicient in its operation andfree from danger of exploding. This invention consists of a perforatedcap, in combination with a reservoir, feedtube, and bell-shaped cover,for the purpose of allowing the free admission of atmospheric air intothereservoir, and at the same time preventing the entrance of the oilinto the pipe leading to the burner when filling the reservoir.

To enable others skilled in the art to make and use my invention, I willproceed more particularly to describe its construction and operation.

The figure represents a sectional elevation of my improved gas-lamp.

A is the oil-chamber or reservoir in which the gas is generated, whichmay be made of any suitable metalrand of convenient dimensions. B is apipe, which passes vertically through the said reservoir, and extendsbeyond the upper and lower ends of the latter. The gas is admitted intothis pipe by means of a perforation, a, provided therein, and passesthrough the lower portion of the same to the burner O. Immediately yabove the perforation a the pipe B is closed, and

a funnel or bell-shaped cover or bonnet, D, is

secured thereto, which may be made of any suitable material, and of suchdimensions that its lower edge will extend to within a short distance ofthe inner surface of the reservoir A, and which is for the purpose ofpreventing the oil entering the perforation a in the pipe when thereservoir is being filled. The upper end of the pipe B is open, and onthat portion o f the same which passes within the reservoir, andimmediately under the top of the latter, are provided one or moreperforations, b, for the purpose of admitting air into the oil-chamberand also for lling in the oil, On the extreme upper 'end of the pipe B,which extends outside of the top of the reservoir, is provided ascrew-thread, upon which fits a cap, E, provided with a correspondingscrew-thread. A perforation, c, passes through this cap E, connectingwith the bore of the pipe B, through which the air is admitted into thepipe B, and from thence, through the perforation b, into the reservoir,where it mingles with the vapor from the oil and passes through theperforation a to the burner. The upper portion of the cap E may beprovided with a loop, d., for suspending the lamp. When the reservoir isto be supplied with oil this cap E is removed and the oil poured in atthe top of the pipe B, from whence it passes through the perforations binto the reservoir and falls upon the bonnet D, which latter prevents itfrom entering the perforation a. F is a transparent disk, inserted inany suitable nlanner in the side of the reservoir, which is for thepurpose of enabling the person who is iilling the lamp to see thesurface of the oil and ascertain when a suicient quantity has beenpoured in.

It will be seen that a lamp constructed as above described may bemanufactured at a small cost, and at the same time it is easily managed,and is efficient in its operation and not liable to explode.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent of the United States, is-

The cap E, provided with a perforation, c, in combination with thereservoir A, bonnet D, pipe B, and perforations a b, substantially asherein shown and described and for the purposes set forth.

JOSHUA GRAY. Witnesses:

J oHN S.- THORNTON, WM. VENTZ. (90)

